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In either molecular spectroscopy or atomic spectroscopy, the absorbance characteristics of a species are described in terms of an ABSORBANCE SPECTRUM, which is a plot of some function of beam attenuation against ,  or .

The y-axis is usually either transmittance (T), Absorbance (A) or log(Absorbance).

Compound X (RMM = 167.0) exhibits a molar absorptivity of 1850 dm3 mol-1 cm-1 at its corresponding max (420 nm). A solution was prepared by dissolving 0.1106 g of a sample that contained 14.4% by mass of X in water and diluting to 500 cm3. Calculate a value for the transmittance (expressed as a %) of the solution measured at 420 nm using a 2 cm cell.

What colour would you expect the solution to be? - assuming that compound X was the only substance present in the sample to absorb in the visible region.